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Hydrograph River at a Glance Download
West Branch Delaware River at Cannonsville Reservoir Pool (ft)Highest Observation: 1120.15 ft at 4:55PM Sep 17, 2019Observed: 1120.13 ft at 6:00PM Sep 17, 2019Observed: 1120.1 ft at 7:25PM Sep 17, 2019Observed: 1120.07 ft at 8:55PM Sep 17, 2019Observed: 1120.03 ft at 10:30PM Sep 17, 2019Observed: 1120 ft at 11:50PM Sep 17, 2019Observed: 1119.91 ft at 4:00AM Sep 18, 2019Observed: 1119.88 ft at 5:25AM Sep 18, 2019Observed: 1119.81 ft at 8:15AM Sep 18, 2019Observed: 1119.8 ft at 8:55AM Sep 18, 2019Observed: 1119.8 ft at 9:10AM Sep 18, 2019Observed: 1119.76 ft at 10:55AM Sep 18, 2019Observed: 1119.72 ft at 12:30PM Sep 18, 2019Observed: 1119.67 ft at 3:10PM Sep 18, 2019Observed: 1119.64 ft at 4:40PM Sep 18, 2019Observed: 1119.61 ft at 6:15PM Sep 18, 2019Observed: 1119.61 ft at 6:30PM Sep 18, 2019Observed: 1119.58 ft at 8:00PM Sep 18, 2019Observed: 1119.55 ft at 9:25PM Sep 18, 2019Observed: 1119.51 ft at 10:55PM Sep 18, 2019Observed: 1119.5 ft at 11:50PM Sep 18, 2019Observed: 1119.41 ft at 3:40AM Sep 19, 2019Observed: 1119.35 ft at 6:30AM Sep 19, 2019Observed: 1119.33 ft at 7:40AM Sep 19, 2019Observed: 1119.32 ft at 8:15AM Sep 19, 2019Observed: 1119.3 ft at 8:55AM Sep 19, 2019Observed: 1119.29 ft at 9:10AM Sep 19, 2019Observed: 1119.29 ft at 9:25AM Sep 19, 2019Observed: 1119.27 ft at 10:00AM Sep 19, 2019Observed: 1119.26 ft at 10:15AM Sep 19, 2019Observed: 1119.24 ft at 11:25AM Sep 19, 2019Observed: 1119.2 ft at 1:10PM Sep 19, 2019Highest Forecast: 1119.1 ft 8:00PM Sep 19, 2019Forecast: 1119 ft 2:00AM Sep 20, 2019Forecast: 1118.8 ft 8:00AM Sep 20, 2019Forecast: 1118.7 ft 2:00PM Sep 20, 2019Forecast: 1118.6 ft 8:00PM Sep 20, 2019Forecast: 1118.4 ft 2:00AM Sep 21, 2019Forecast: 1118.3 ft 8:00AM Sep 21, 2019Forecast: 1118.2 ft 2:00PM Sep 21, 2019Forecast: 1118.1 ft 8:00PM Sep 21, 2019Forecast: 1117.9 ft 2:00AM Sep 22, 2019Forecast: 1117.8 ft 8:00AM Sep 22, 2019CNNN6(plotting HPIRZ) Graph Created (3:00PM Sep 19, 2019)ObservedForecast (issued 8:31AM Sep 19)Latest observed value: 1119.2 ft at 1:10 PM EDT 19-Sep-2019. Flood Stage is 1153 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
NOTE: The data are from automated sensors and are courtesy of the New York City Department of Environmental Protection. They are provisional and subject to change.

NOTE: Forecasts for the West Branch Delaware River at Cannonsville Reservoir are issued routinely year-round.

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Upstream Gauge - at Walton Upstream Gauge Downstream Gauge Downstream Gauge - at Stilesville
Flood Categories (in feet)
Major Flood Stage: 1156
Moderate Flood Stage: 1154
Flood Stage: 1153
Action Stage: 1150
Low Stage (in feet): -9999

Historic Crests
(1) 1,158.00 ft on 06/29/2006
(2) 1,156.78 ft on 04/04/2005
(3) 1,156.73 ft on 03/16/1986
(4) 1,155.24 ft on 09/19/2004
(5) 1,154.89 ft on 03/23/2003
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 1,153.13 ft on 04/08/2017
(2) 1,153.52 ft on 04/29/2011
(3) 1,154.08 ft on 03/12/2011
(4) 1,154.68 ft on 03/10/2008
(5) 1,153.44 ft on 04/20/2007
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:16
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Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
About This Location Collapse

Latitude: 42.062778° N, Longitude: 75.374722° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 1153 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 0 ft 1153 ft  
Additional Information Collapse
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
3 Day (SREF) 7 Day (NAEFS) 7 Day (GEFS)
SREF Ensemble NAEFS Ensemble  GEFS Ensemble 

Note: Use the official hydrograph at the top of this web page for river levels within the next 48 hours.

See the Product Description Document link for more details on the interpretation of the 3,7 day graphics. 

Click individual graphics to enlarge.

30-Day Reservoir Inflow Table
60-Day Reservoir Inflow Table
90-Day Reservoir Inflow Table
30-Day Reservoir Inflow Graph
60-Day Reservoir Inflow Graph
90-Day Reservoir Inflow Graph
30-Day Reservoir Weekly Inflow Table
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Hydrologic Resources Additional Resources
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
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Page last modified: 1-Mar-2019 12:35 AM
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